#include <iostream>
#include <fstream>
#define Nmax 17
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n;
int v[Nmax];

void Afisare (int k)
{
    int i;

    for (i=1;i<=k;i++)
        fout<<v[i]<<" ";

    fout<<"\n";

}

void Back (int k)
{
    for (int i=v[k-1]+1;i<=n;i++)
    {
        v[k]=i;
        Afisare(k);
        if (k<n) Back(k+1);
    }
}
int main()
{
    fin>>n;
    Back(1);
    return 0;
}